In medium Dutch oven, heat oil over medium high heat. Add onion and carrot and cook until onion is softened. Stir occasionally, 6 to 8 minutes. Add broth and potatoes and bring to boil. Reduce heat to low and simmer until potatoes are almost tender, about 6 minutes.

Sitr in tomatoes with juice, soy beans, zucchini, green beans, chard and red pepper flakes if desired. Increase heat to medium high and bring to a boil. Stir in pasta, reduce hear to low and simmer until pasta is tender, 10 to 15 minutes. Season with salt and pepper.